CN114226874B

CN114226874B - Gear hobbing machine

Info

Publication number: CN114226874B
Application number: CN202111664221.5A
Authority: CN
Inventors: 邱前远; 任光华
Original assignee: Chongqing Xingji Gear Co ltd
Current assignee: Chongqing Xingji Gear Co ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2023-07-04
Anticipated expiration: 2041-12-31
Also published as: CN114226874A

Abstract

The invention belongs to the technical field of gear machining equipment, and particularly discloses a gear hobbing machine, which comprises a machine tool of the gear hobbing machine, a workbench and a hob, wherein the workbench is provided with a fixing part for fixing a gear, and a box body is arranged around the workbench; the machine tool is characterized by further comprising a conveying unit, a grabbing unit and a polishing unit, wherein a channel is arranged in the machine tool, one section of the conveying unit is positioned in the channel and at one side of the workbench, and the conveying unit is provided with a plurality of gear parts for placing gears; the grabbing unit is fixed on the workbench and comprises a mechanical arm and a grabbing part, wherein the mechanical arm can rotate and stretch out and draw back, and the grabbing part is used for grabbing the gear; the polishing unit is arranged on the workbench and used for polishing the gear. Compared with the prior art, the hob, the conveying unit, the grabbing unit, the polishing unit and other parts of structures of the hob can be matched and linked, so that the gear processing is time-saving and labor-saving, and the efficiency is higher.

Description

Gear hobbing machine

Technical Field

The invention belongs to the technical field of gear machining equipment, and particularly discloses a gear hobbing machine.

Background

The gear hobbing machine (gear hobbing machine) is the most widely used machine tool in gear machining machines, and can be used for cutting straight-tooth and helical cylindrical gears, worm gears, chain wheels and the like. Gear hobbing machines are widely used in various machine manufacturing industries such as automobiles, tractors, machine tools, engineering machinery, mining machinery, metallurgical machinery, petroleum, instruments, aircraft and spacecraft.

When the existing gear hobbing machine is used for machining gears, the gear blank which is machined and formed is fixed on a workbench of the gear hobbing machine, and the hob can automatically process teeth on the gear blank after the hob is finished; after the gear is machined, the gear can be detached from the workbench, and then deburring or polishing is carried out to obtain a finished gear.

The existing gear hobbing machine has the following problems when processing gears:

1. the gear blank is installed on the workstation to and the gear is taken off from the workstation, needs manual work or other equipment to accomplish, and needs gear hobbing machine to shut down the operation, and is very time-consuming, and has the potential safety hazard.

2. After the gear is taken down from the gear hobbing machine, the gear is required to be deburred or polished by special equipment, so that the production process of the gear is complex, the production period is long, the labor is involved in the production process, and the process is labor-consuming.

3. The gear production process can not realize continuous and rapid batch production of gears, and only can realize single production, so that single gear production takes longer time, and the overall production efficiency of the gears is lower.

4. In the process of processing the gear by the existing gear hobbing machine, the manual intervention is more, so that the accuracy of the gear is greatly affected by the manual intervention, and the processing accuracy of the gear is easily error-prone.

Disclosure of Invention

The invention aims to provide a gear hobbing machine, which aims to solve the problems that the gear hobbing machine wastes time and labor and has low efficiency in gear processing.

In order to achieve the above purpose, the basic scheme of the invention is as follows: the gear hobbing machine comprises a machine tool of the gear hobbing machine, a workbench and a hob, wherein a fixing part for fixing a gear is arranged on the workbench, and a box body is arranged around the workbench; the machine tool is characterized by further comprising a conveying unit, a grabbing unit and a polishing unit, wherein a channel is arranged in the machine tool, one section of the conveying unit is positioned in the channel and at one side of the workbench, and the conveying unit is provided with a plurality of gear parts for placing gears; the grabbing unit is fixed on the workbench and comprises a mechanical arm and a grabbing part, wherein the mechanical arm can rotate and stretch out and draw back, and the grabbing part is used for grabbing the gear; the polishing unit is arranged on the workbench and used for polishing the gear.

The working principle of the basic scheme is as follows: the gear hobbing machine can process and polish gears, a plurality of gear blanks are placed on the gear parts of the conveying units one by one, the conveying units are started, and the gear blanks can be moved into the channels in the conveying process of the conveying units. When the gear blank is conveyed to one side of the workbench, the grabbing unit is started, the grabbing part is used for taking the gear blank, the gear blank is moved to the fixing part on the workbench through the extension and rotation of the mechanical arm, and the gear blank is fixed through the fixing part. And then starting the hob to process the gear blank, after the tooth of the gear blank is processed, moving the gear to a polishing unit, removing burrs of the gear through the polishing unit, polishing the tooth, and thus obtaining a gear finished product. The grabbing unit is started again to grab and place the gear on the gear part of the conveying unit, the gear finished product is conveyed to the outside of the machine tool through the conveying of the conveying unit, and then the gear can be used.

The beneficial effect of this basic scheme lies in:

1. the gear hobbing machine is used for fixing the gear blank and placing the gear, is completed through the grabbing unit, does not need manual work or other equipment to participate, eliminates potential safety hazards existing in the manual operation process, does not need shutdown operation, and reduces the time consumed by gear machining.

2. The gear hobbing machine can immediately adopt the polishing unit to deburr or polish the gear after the gear is machined, so that the complexity of the gear production process is reduced, the gear production period is shortened, the production process does not need to be manually participated, and the gear machining process is time-saving, labor-saving, convenient and fast, and efficiency is improved.

3. The gear hobbing machine is continuously conveyed through the conveying unit, the gear is installed and taken by the grabbing unit, the gears can be produced in batches and rapidly, the processing process of each gear consumes a long time to be greatly shortened although the gear hobbing machine is used for processing the gears singly, and the overall production efficiency of the gears is greatly improved.

4. In the process of processing the gear by the gear hobbing machine, the gear blank is conveyed into the gear hobbing machine, the gear is conveyed out of the gear hobbing machine until a gear finished product is conveyed, manual intervention is not needed in the whole process, and the gear hobbing machine is matched with the gear hobbing machine, so that the processing precision of the gear is not influenced by the manual intervention, and larger errors of the processing precision of the gear are avoided.

Compared with the prior art, the hob, the conveying unit, the grabbing unit, the polishing unit and other parts of structures of the hob can be matched and linked, so that the gear processing is time-saving and labor-saving, and the efficiency is higher.

Further, the conveying unit comprises a horizontal conveying part, and a plurality of gear parts are uniformly arranged on the conveying part at intervals; the gear part comprises a base fixed on the conveying part, and a support seat detachably connected with a fixed gear is arranged on the base.

The beneficial effects are that: the gear blank can be well fixed through the supporting seat, the gear blank can be conveyed through the base, and if the supporting seat is damaged in the use process, the gear blank can be replaced.

Further, be equipped with the shaft hole on the base, the supporting seat is equipped with multiple specification, the below and the shaft hole block of supporting seat are connected, the shaft hole radially is equipped with the tight bolt of support below tight supporting seat.

The beneficial effects are that: for gears with different specifications, the supporting seats with different specifications can be correspondingly used, so that the gear blank can be well fixed with the supporting seats, and the grabbing unit is convenient to grab the gear blank. Through shaft hole and supporting seat below block to adopt to support the tight mode of tight bolt support, with supporting seat and base fixed connection, make the supporting seat change comparatively convenient and fast.

Further, a detection mechanism for detecting completion of gear machining is arranged on the conveying unit.

The beneficial effects are that: through the detection structure, the machined gear can be detected, and the gear finished product is prevented from being transferred into the machine tool again for machining.

Further, detection mechanism includes rotating the piece, is located the outside sensing piece of box and is located the piece that supports of passageway exit, rotate the piece and be connected with the base rotation, be equipped with the lug that is used for the sensing piece to respond to on the rotating the piece, support the piece and can make the rotating the piece rotate.

The beneficial effects are that: after the gear is finished, the gear is transmitted from the channel, the abutting block can enable the rotating piece to rotate, when the corresponding gear is transmitted to the sensing piece, the sensing protruding block is misplaced with the sensing piece, the sensing piece can not sense the protruding block, and the corresponding gear can be considered to be finished to be processed without being transmitted to the channel to be processed.

Further, the support block that is equipped with on the base, the rotation piece rotates with the support block lateral part and is connected, the rotation piece is L type structure, the lug sets up in the one side that the rotation piece kept away from the supporting seat.

The beneficial effects are that: the support block is convenient for the installation of the rotating piece, and the rotating piece is of an L-shaped structure and is convenient for the rotating piece to rotate by the supporting block when passing through the supporting block.

Further, the sensing piece and the rotating piece are both positioned on the inner side of the conveying part.

The beneficial effects are that: the outside of transfer portion will place the gear blank and collect the gear finished product, will respond to piece and rotating the inboard that the piece is located transfer portion with the sensing, the use of the transfer unit of being convenient for.

Further, a main shaft is arranged on the grabbing part, and a plurality of grabbing claws are arranged around the main shaft.

The beneficial effects are that: the gear blank that can be convenient for will snatch is installed on the fixed part, also can in time snatch the gear finished product that has already processed simultaneously.

Further, a rotating disc is arranged on the workbench, the fixing part is arranged on the rotating disc, and the hob and the polishing unit correspond to the position of the rotating disc.

The beneficial effects are that: after the gear teeth are machined on the gear blank fixed on the fixing part, the rotating disc is started to rotate, so that the gear can move the polishing unit, the polishing unit can be started to polish and deburr the gear, the setting of the rotating disc reduces the complex operation from the machining position to the polishing position of the gear, and the machining efficiency of the gear is further improved.

Further, the polishing unit comprises a driving gear and a polishing gear, a telescopic arm connected with the polishing gear is arranged on the workbench, and the driving gear is used for driving the gear to rotate.

The beneficial effects are that: the gear is driven to rotate through the driving gear, the gear is subjected to deburring and polishing through the polishing gear, the polishing process of the gear can be completed rapidly, the gear is located behind the polishing unit, the polishing gear can be moved to the outside of the gear through the telescopic arm, and further the influence of the polishing gear on the gear is avoided.

Drawings

FIG. 1 is a schematic view of an embodiment of a gear hobbing machine according to the present invention;

fig. 2 is a top view of the transfer unit.

Detailed Description

The following is a further detailed description of the embodiments:

reference numerals in the drawings of the specification include: machine tool 10, table 11, hob 12, rotary disk 13, fixed part 14, case 15, channel 16, opening 17, transfer part 21, base 22, shaft hole 23, support base 24, tightening bolt 25, bracket 26, support plate 27, abutment 31, sensor 32, rotor 33, bump 34, abutment 35, mechanical arm 41, spindle 42, grasping claw 43, telescopic arm 51, driving gear 52, polishing gear 53.

As shown in fig. 1 and 2, a gear hobbing machine comprises a machine tool 10 of the gear hobbing machine, a workbench 11, a hob 12, a conveying unit, a grabbing unit and a polishing unit, wherein the workbench 11 is arranged on the machine tool 10, a fixing part 14 for fixing a gear is arranged on the workbench 11, and the hob 12 is positioned on one side of the fixing part 14 and is used for hobbing the gear. The rotary disk 13 is arranged in the workbench 11, the fixing part 14 is arranged on the rotary disk 13, and the hob 12 and the polishing unit correspond to the rotary disk 13 in position. A box 15 is arranged around the workbench 11, and the box 15 is used for enclosing the processing space of the gear.

The polishing unit is arranged on the workbench 11 and is positioned at the same height as the fixing part 14. The polishing unit is arranged on the workbench 11 and used for polishing gears, the polishing unit comprises a driving gear 52 and a polishing gear 53, the workbench 11 is provided with a telescopic arm 51 connected with the polishing gear 53, and the driving gear 52 is used for driving the gear 52 to rotate.

The grabbing unit is fixed on one side of the workbench 11, and comprises a mechanical arm 41 and a grabbing part, wherein the mechanical arm 41 can move up and down along the workbench 11 and rotate, the mechanical arm 11 can stretch and retract, and the grabbing part is used for grabbing the gear. In this embodiment, a main shaft 42 is provided on the gripping portion, and a plurality of gripping claws 43 are provided around the main shaft 42, preferably three gripping claws 43 are provided.

As shown in fig. 2, a channel 16 is provided in the machine tool 10, one section of the conveying unit is located in the channel 16 and is located at one side of the workbench 11, an opening 17 is provided in the middle of the channel 16, and the opening 17 is communicated with the inside of the box 15, so that the grabbing claws 43 can grab gears on the conveying unit from the opening 17. The side of the transfer unit outside the channel 16 is provided with a support plate 27 and a bracket 26 for supporting the transfer unit outside the machine tool 10. The transfer unit includes a horizontal transfer portion 21 and a plurality of gear portions for placing gears, the plurality of gear portions being disposed on the transfer portion 21 at uniform intervals. The gear part comprises a base 22 fixed on the conveying part 21, and a support seat 24 detachably connected with a fixed gear is arranged on the base 22; in order to facilitate the processing of gears of different specifications, the support seat 24 is provided with a plurality of specifications corresponding to the gears of different specifications; in this embodiment, the base 22 is provided with a shaft hole 23, the lower part of the supporting seat 24 is engaged with the shaft hole 23, and the shaft hole 23 is radially provided with a tightening bolt 25 for tightening the lower part of the supporting seat 24.

The detecting mechanism for detecting the completion of gear machining is arranged on the conveying unit and comprises a rotating piece 33, a sensing piece 32 positioned outside the box body 15 and a supporting block 31 positioned at the outlet of the channel 16, the rotating piece 33 is rotationally connected with the base 22, a lug 34 used for sensing the sensing piece 32 is arranged on the rotating piece 33, and the supporting block 31 can enable the rotating piece 33 to rotate. In this embodiment, the support block 35 is disposed on the base 22, the rotating member 33 is rotatably connected to a side portion of the support block 35, the rotating member 33 has an L-shaped structure, and the bump 34 is disposed on a side of the rotating member 33 away from the support seat 24. To facilitate the use of the present gear hobbing machine, both the sensing member 32 and the rotating member 33 are located inside the conveying section 21 in this embodiment.

In this embodiment, the conventional structures may be adopted for the rotation, movement and extension of the mechanical arm 11, extension of the extension arm, transmission of the transmission portion, control of the transmission portion 21 after the sensing of the sensing piece 32 to the boss 34, and the machine tool 10, the workbench 11, the hob 12, the fixing portion 14, the box 15, etc., which will not be described herein.

The specific implementation process is as follows: the gear hobbing machine can process and polish gears, the transmission unit is positioned outside the machine tool 10, the corresponding supporting seat 24 is inserted into the shaft hole 23 of the base 22 according to the specification of the gears, the supporting seat 24 is fixed by the abutting bolt 25, a gear blank is placed on the supporting seat 24, meanwhile, the rotating piece 33 corresponds the lug 34 to the sensing piece 32, the transmission part 21 is started, and the gear blank is transmitted into the machine tool 10.

When the gear blank is conveyed to one side of the workbench 11 and is positioned at the opening 17, the grabbing unit is adopted to grab the gear, the mechanical arm 41 is rotated to enable the grabbing claw 43 to be aligned with the gear to grab, the mechanical arm 41 is rotated again, and the gear blank is stretched to a proper length to align the gear blank with the workbench 11 to the fixing part 14 and fix the gear blank. Then start hobbing cutter 12 and process the gear blank, after the tooth processing of gear blank finishes, rotate the rolling disc 13 and remove the gear and polish the unit, will polish gear 53 and processing gear meshing through flexible arm 51, drive processing gear rotation through driving gear 52 to clear away the burr of gear, polish the tooth, can obtain the gear finished product.

At the moment, the grabbing unit is started again to grab the gear, specifically, the mechanical arm 41 is rotated and stretched, so that the grabbing claw 43 is aligned with the gear position of the polishing unit, and the grabbing claw 43 is adopted to grab the gear; the mechanical arm 41 is then rotated and extended, the finished gear is placed on the gear portion of the transfer unit, the transfer portion 21 is used to transfer the gear, and the gear product is transferred to the outside of the machine tool 10.

When the gear product is conveyed out of the channel 16 along with the conveying part 21, the abutting block 31 on the channel 16 acts on the rotating piece 33 to enable the rotating piece 33 to rotate, so that the protruding block 43 no longer corresponds to the position of the sensing piece 32. When the gear finished product is conveyed along with the conveying part 21 and conveyed to the position of the sensing part 32, the sensing part 32 cannot sense the convex blocks 34, so that the conveying part 21 can stop conveying, at the moment, the part of the conveying part 21 positioned outside the machine tool 10 is the gear before the conveying of the sensing part 32, and the gear finished product is a machined gear and can be taken down in time, so that the gear finished product is prevented from entering the machine tool 10 again to be machined.

The gear processing steps are repeated, and the gear can be continuously and circularly processed.

The foregoing is merely exemplary of the present invention, and specific technical solutions and/or features that are well known in the art have not been described in detail herein. It should be noted that, for those skilled in the art, several variations and modifications can be made without departing from the technical solution of the present invention, and these should also be regarded as the protection scope of the present invention, which does not affect the effect of the implementation of the present invention and the practical applicability of the patent. The protection scope of the present application shall be subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.

Claims

1. The utility model provides a gear hobbing machine, includes lathe, workstation and the hobbing cutter of gear hobbing machine, be equipped with the fixed part that is used for fixed gear on the workstation, be equipped with the box around the workstation, its characterized in that: the machine tool is characterized by further comprising a conveying unit, a grabbing unit and a polishing unit, wherein a channel is arranged in the machine tool, one section of the conveying unit is positioned in the channel and at one side of the workbench, and the conveying unit is provided with a plurality of gear parts for placing gears; the grabbing unit is fixed on the workbench and comprises a mechanical arm and a grabbing part, the mechanical arm can rotate and stretch out and draw back, the grabbing part is used for grabbing a gear, a main shaft is arranged on the grabbing part, and a plurality of grabbing claws are arranged around the main shaft; the grinding unit is arranged on the workbench and used for grinding the gear, a rotating disc is arranged on the workbench, the fixing part is arranged on the rotating disc, and the hob and the grinding unit are corresponding to the positions of the rotating disc; the conveying unit is provided with a detection mechanism for detecting the completion of gear machining, the detection mechanism comprises a rotating piece, a sensing piece positioned outside the box body and a supporting block positioned at the outlet of the channel, the rotating piece is rotationally connected with the base, the rotating piece is provided with a lug for sensing the sensing piece, and the supporting block can enable the rotating piece to rotate; the polishing unit comprises a driving gear and a polishing gear, a telescopic arm connected with the polishing gear is arranged on the workbench, and the driving gear is used for driving the gear to rotate.

2. The gear hobbing machine as claimed in claim 1, wherein the conveying unit comprises a horizontal conveying part, and a plurality of gear parts are uniformly arranged on the conveying part at intervals; the gear part comprises a base fixed on the conveying part, and a support seat detachably connected with a fixed gear is arranged on the base.

3. The gear hobbing machine according to claim 2, wherein the base is provided with a shaft hole, the supporting seat is provided with a plurality of specifications, the lower part of the supporting seat is connected with the shaft hole in a clamping manner, and the shaft hole is radially provided with a supporting bolt for supporting the lower part of the supporting seat.

4. The gear hobbing machine according to claim 3, wherein the supporting block is arranged on the base, the rotating piece is rotationally connected with the side part of the supporting block, the rotating piece is of an L-shaped structure, and the protruding block is arranged on one side, far away from the supporting seat, of the rotating piece.

5. The gear hobbing machine according to claim 4, wherein the sensing member and the rotating member are both located inside the conveying section.